package com.example.demo.autoConfig;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.event.ApplicationReadyEvent;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.annotation.Bean;
import org.springframework.context.event.ApplicationEventMulticaster;
import org.springframework.context.event.SimpleApplicationEventMulticaster;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.core.env.Environment;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Component;
import org.springframework.context.ApplicationListener;

@EnableConfigurationProperties(com.example.demo.autoConfig.CustomProperties.class)
@ConditionalOnProperty(prefix="ff.auto",name="enable",havingValue="true")
public class AutoConfig {

    //@springbootapplication注解可以扫描
    @Bean
    CommandLineRunner createCustomCommandLineRunner(Environment env) {
        return new com.example.demo.autoConfig.CustomCommandLinerRunner(env);
    }

    //  自定义 ApplicationReadyEvent 的事件监听器
    @Bean
    public ApplicationListener<ApplicationReadyEvent> listener() {
        return new ApplicationListener<ApplicationReadyEvent>() {
            @Override
            public void onApplicationEvent(ApplicationReadyEvent applicationReadyEvent) {
                System.out.println("ApplicationReadyEvent 事件监听器");
            }
        };
    }

    //自定义事件发生器
    @Bean(AbstractApplicationContext.APPLICATION_EVENT_MULTICASTER_BEAN_NAME)
    ApplicationEventMulticaster customApplicationEvenMulicaster(ThreadPoolTaskExecutor taskExecutor) {
        SimpleApplicationEventMulticaster eventMulticaster = new SimpleApplicationEventMulticaster();
        eventMulticaster.setTaskExecutor(taskExecutor);
        return eventMulticaster;
    }

    //    自定义事件
    public static class NoticeEvent extends ApplicationEvent {
        private static final Logger logger = LoggerFactory.getLogger(NoticeEvent.class);

        private final String message;

        public NoticeEvent(String message) {
            super(message);
            this.message = message;
            logger.info("添加事件成功Message:{}", message);
        }

        public String getMessage() {
            return message;
        }
    }

    //自定义事件监听器
    @SuppressWarnings("unused")
    @Component
    static class NoticeListener implements ApplicationListener<NoticeEvent> {
        private static final Logger logger = LoggerFactory.getLogger(NoticeListener.class);

        @Override
        public void onApplicationEvent(NoticeEvent noticeEvent) {
            logger.info("事件监听器获取到NoticeEvent,睡眠当前线程2秒。。");
            try {
                Thread.sleep(2);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            logger.info("NoticeEvent的message属性是：{}", noticeEvent.getMessage());
        }
    }
}
